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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [April 24, 



granite rocks that occasionally protrude above its surface, or of 

 volcanic rocks of black scoria that frequently interrupt the general 

 level. 



"Proceediug inland for the next 50 or 60 miles is a granite 

 country that has been originally capped with horizontal sandstones, 



Fig. 3. — Cliff and Outlier of " Desert Sandstone" at Gave Creek, 

 Gilbert District, Northern Queensland. 



and has an elevation of about 1000 feet; this range terminates to the 

 southward in level plains of good soil, the produce of the next series 

 of more elevated country; whilst towards the northern edges the 

 granite and sandstones have undergone great changes, through the 

 action of numerous trap-dykes, that have greatly disturbed the sur- 

 face, producing metamorphic rocks, some resembling jasper, and 

 others highly cellular and scoriaceous." 



In about latitude 22° on the meridian of Nichol Bay he came upon 

 another and more elevated range trending away to the S.E., having 

 an altitude of 2500 feet above the sea. 



This, unlike the last section, has a sotitheru escarpment of 500 or 

 600 feet, and an average breadth of 8 or 10 miles ; it consists of 

 horizontal sandstones and conglomerates, which have undergone com- 

 paratively little change. 



Augustus Gregory's description of the sandstones of the Victoria 

 river, as illustrated by the accompanying section (Fig. 4), agrees 

 with those of the "Desert Sandstone'' of Queensland, the speci- 



